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SM-Resolver
Parameter
structure
Keypad and
display
Parameter
x.00
Parameter
description format
Advanced parameter
descriptions
Macros
Serial comms
protocol
Electronic
nameplate
Performance RFC mode
278 Unidrive SP Advanced User Guide
www.controltechniques.com Issue Number: 10
Pr x.29 and Pr x.30 are duplicates of Pr x.04 and Pr x.05 respectively.
This Solutions Module does not have its own freeze input, therefore the freeze input must come from a SM-Applications or SM-Universal Encoder
Plus. The freeze data is processed every 4ms x number of dumb modules installed. If a freeze has occurred and the freeze flag (Pr x.39) is zero, the
position is stored in Pr x.36 and the freeze flag is set. The freeze flag must be reset by the user before the next freeze event is stored. This function is
only active with 2 pole resolvers.
At power-up Pr x.45 is initially OFF (0), but is set to On (1) when the SM-Resolver can provide position feedback. Pr x.45 then remains at On (1) while
the drive is powered-up.
If Pr x.49 is set to one, Pr x.04 and Pr x.05 are not updated. If this parameter is zero, Pr x.04 and Pr x.05 are updated normally.
The error status is provided so that the only one option error trip is required for each Solutions Module slot. If an error occurs, the reason for the error
is written to this parameter and the drive may produce a ‘SLX.Er’ trip, where x is the slot number. A value of zero indicates that the Solutions Module
has not detected an error, a non-zero value indicates that an error has been detected. (See Table 5-14 on page 272 for the meaning of the values in
this parameter). When the drive is reset, this parameter is cleared.
This Solutions Module includes a temperature monitoring circuit. If the PCB temperature exceeds 90°C, the drive fan is forced to operate at full speed
(for a minimum of 10s). If the temperature falls below 90°C, the fan can operate normally again. If the PCB temperature exceeds 100°C, the drive is
tripped and the error status is set to 74.
x.30 Non-marker reset position
RO Uni NC PT
Ú
0 to 65,535 (1/2
16
ths of a
revolution)
Ö
Update rate: 4ms x number of dumb modules
x.35 Freeze revolution counter
RO Uni NC PT
Ú
0 to 65535 revolutions
Ö
Update rate: 4ms x number of dumb modules
x.36 Freeze position
RO Uni NC PT
Ú
0 to 65535 (1/2
16
ths of a
revolution)
Ö
Update rate: 4ms x number of dumb modules
x.39 Freeze flag
RW Bit NC
Ú
OFF (0) or On (1)
Ö
OFF (0)
Update rate: 4ms x number of dumb modules
x.45 Position feedback initialised
RO Bit NC PT
Ú
OFF (0) or On (1)
Ö
Update rate: Background write
x.49 Lock position feedback
RW Bit
Ú
OFF (0) or On (1)
Ö
Update rate: Background write
x.50 Solutions Module error status
RO Uni NC PT
Ú
0 to 255
Ö
Update rate: Background write
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